Clover hulling and threshing machine.



APATEN'IED DEC. 15, 1903.. o. HOBBY. GLOVER HULLING AND-*THRESHING MACHINE'. APPLIUATION FILED JAN. e, 1902.

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PATLNTBD 1350.15, 190s. l W. 0..'R0BBY., l @LOVER HULLING AND THRLSHING MACHINE.

APPLICATION FILED JAN. 6, 1902.

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UNITED STATES PATENT Patented December 15, 1903.

FFICE.

WILLIAM O. BOBBY, OF LAPORTE, INDIANA, ASSIGNOR TO M. RUMELY OOM- PANY, OF LAPORTE, INDIANA, A CORPORATION OF INDIANA.

CLOVER HULLING AND THRESHING lVlACIl-IINE.v

SPECIFICATION forming part of Letters Patent No. 747,226, dated December 15, 1903.

Application filed January 6, 1902.

To all whom t may concern.'

Be it known that I, WILLIAM C. ROBBY, a i citizen of the United States, residing in Laporte, in the county of Laporte and State of Indiana, have invented a new and' useful Improvement in Olover Hulling and Threshing Machines, of which the following is a specification.

This invention relates to combined clover xo threshing and hulling machines.

The main feature of the invention consists in providing the hulling-cylinder and its concave with means at the receiving side whereby any stone or other foreign matter entering the machine with the clover may be intercepted before it can enter fbetween the cylinder and concave, so that all injury from that source may be obviated.

The nature of my invention will be fully 2o understood from the description thereof given below and from the accompanying drawings, forming a part of this specification, and in which- Figure 1 is a longitudinal section of a machine embodying my present improvements. Fig. 2 is a partial horizontal section in a plane above the hulling-cylinder. Fig. 3 is a partial vertical section of the hulling-cylinder and its casing.

3o In said drawings, 1() represents the threshing-cylinder, receiving the clover from the table 11 and delivering it upon the upper separating-bolt 12. A cylinder 13, located ovel` the bolt 12 in proximity to threshing-cylinder and armed with lingers 14, prevents any clog-`- ging or stoppage of the feed. Below the separator or bolt 12 is another separator or bolt 15, and both are agitated in the usual manner, bolt 12 discharging the clover heads upon the 4o bolt 15 and the latter discharging them in turn to the returns-table 16, which is also vibrated in any usual way.

17 is the distributing-conveyer, by which the tailings are returned to the table preparatory to being subjected a second time to the action of the hulling-cylinder and the seed-separating screen. The hopper of this crossconveyer is shown at 18; but I do not show the elevator for raising the tailings to the hopper, as its 5o construction and location are Well known. A

portion of the device by which the table is Serial No. 88,588. (No model.)

vibrated is shown at 19. The depressed portion of the table is connected with the main portion by the incline 20.

Thehulling-cylinder is shown at 2l and its 55 concave at 22. The latter is connected to a transverse partition or support 23 above the cylinder by a section 24 of casing, part or all of which is hinged, so that it may be opened whenever occasion requires to permit the 6o throwing out of any stones, brush, or other hard material which may enter the machine with the clover. This section of the casing is opened by the attendant whenever he sees or hears the stone or foreign material-a skilled attendant is usually able to detect it by the peculiar noise it makes when it rst entersand to this end the casing-section 24, or some portion of it, is hinged at 25 and connected to a shaft 26 by several pairs of toggle-arms 27 79 and 27a. The shaft is rocked by the handlever 28 and shortens the toggles, as indicated by the dotted lines in Fig. 6, and thereby opens the section 24 at the bottom, so as to permit the throwing out of the stone. In order to prevent the entry of the stone between the hulling-cylinder and the concave, I provide an intercepting device 29 just below the section 24, which at the same time section is opened is thrust inward toward 8o the hulling-cylinder sufficiently to close the entrance to the concave. This intercepting device consists, preferably, of a sheet of rubber supported upon a guard-sheet 30, capable of being moved bodily toward the cylinder by springs 31. The movement received from the spring is limited by the contact of the depending fiange 32 on the sheet with stops or screws 32, secured in the outside of the coucave. Theinterceptor and its sheet 30 are 9o held in their normal positions and against the tension of the springs by the hooks 34, er1- tering openings provided for them in sheet 30. These hooks are carried upon the section 24, and when the latter is opened it lifts the hooks out of the sheet 30 and allows the springs to act. As soon as the stone or other hard substance has passed out at the open section the sheet 30 is first pushed up against the springs and the lever is dropped to its roo former position, which closes the section 24 and allows the hooks to rengage the sheet 30. The toggles can bend in only one direction, being provided with stops 35 on arms 27a, engaging the offset ends of arms 27. By the means described I avoid injury to the cylinder and concave by stones or other foreign matter.

The hulling-cylinder and concave deliver the-seed and chaff on a seed-separating screen 36, which is unlike the screens heretofore used in the same relation in that instead of being fiat with a continuous unbroken surface the surface is broken by bends extending transversely of the screen. In other words, the screen is so bent that it consists of alternate vertical parts 37 [and inclined parts 38, each extending across the screen, as plainly shown. The vertical bends 37 are Well adapted to secure the discharge of the seed, particularly when the screen is vibrated away from the cylinder, as ymotion iii that direction throws the seeds against such bends and the openings therein.. The inclines also retard the movements of the seed and chaff somewhat toward the delivery end and allow the former increased opportunity to escapeA through the meshes. I nd that this screen is much more efficient in its work than the unbroken slat screen heretofore used.

I lay no claim herein to the separatingscreen .36, nor tothe returns-board having the depressed end with the'tailings-conveyer located above such end, but reserve those features for my application Serial No. 116,324, led July 21, 1,902.

I claim- 1. The combination in a clover-huller, with the hulling-cylinder, of a movable section in the upper part of. the casing adapted to be opened to allow the escape of stones, &c., and means whereby said section may be quickly opened from the outside of the machine while running, substantially as specied.

2. The combination with the hulling-cylinder and concave of aclover-hulling machine, of a movable sectiony in the casing of the cylinder above the concave, a device for closing the entrance to the concave, and means for opening the casing-section and positioning the said device at will, substantially as specified.

3. The combination in a clover-hulling machine with the hulling-cylinder, of a movable section in the casing adapted to be opened quickly, and a device adapted to intercept stones, &;c at the open section, substantially as specified.

4. The combination with the hulling-cylinder and concave of a clover-hulling machine, of a movable section in the casing of the cylinder above the concave, an intercepting device closing the entrance to the concave, springs for positioning the intercepting device, means on said movable section for holding the intercepting device in its nonacting position, and means for opening said movable section at will, substantially as specified.

WILLIAM C. ROBBY.

Witnesses:

Jos. J. RUMELY, S. J. PATTERSON. 

